Planooraph co



- J. L. AND 1. LE R. POTTER.

EXCAVATI NG APPARATUS.

APPLICATION FILED 0c.24. 19w.

Patented Aug. 26, 1919.

eff 447 INVENTORS:

ATTORNEY X f 23 a a THE COLUMBIA VHNOGRAPH C0,, WAIIIINGTON, I). C.

UNITED STATES PATENT OFFICE.

JOSEPH LEWIS POTTER AND JOSEPH LE ROY POTTER, OF INDIANAPOLIS, INDIANA.

EXCAVATING APPARATUS.

Specification of Letters Patent.

Patented A11 26, 1919.

Application filed December 24, 1917. Serial No. 208,683.

To all whom it may concern:

Be it known that We, J OSEPII LEwIs Por- TER and JosEPH LE ROY- POTTER,citizens of the United States, residing at Indianapolis, in the countyof Marion and State of Indiana, have invented a new and usefulImprovement in Excavating Apparatus, of which the following is aspecification, reference being had to the accompanying drawings and tothe letters and figures of reference marked thereon.

This invention relates to excavating apparatus of the type which isadapted for drag-line work with a scoop or drag bucket, the inventionhaving reference more particularly to means for dragging the bucket andfor lifting and carrying the bucket and permitting it to be manipulatedso as to quickly dump its load; the invention having reference also tomeans for operating and controlling the bucket generally in operation.

An object of the invention is to provide improved means which shall besimple and inexpensive for handling excavating buckets conveniently,expeditiously and economically.

Another object is to provide improved excavating apparatus which shallbe especially adapted for use in connection with a hoisting machine andmore particularly one having a swinging boom.

A further object is to provide improved apparatus for ditching workwhich shall be so constructed as to be free from troublesome features,such as drop bottoms, latching devices, springs or other devices liableto become damaged or deranged in operation and entail expense forrepairs, which apparatus shall be adapted to be efliciently used andsimply controlled by the minimum number of operators or attendants.

lVith the above mentioned and other objects in View, the inventionconsists in improved excavating apparatus comprising a dumpingexcavating bucket and controlling appliances therefor whereby the bucketmay be operated as a scoop and lifted with its load, and whereby thebucket may be shifted relatively to its support and caused to tilt orturn over and dump its load. The invention consists alsofurther in thenovel parts, and in the combinations and arrangements of parts orelements, as hereinafter particularly described and further defined inthe appended claims.

Referring to the drawings, Figure 1 is a side elevation of the improvedapparatus in working position for trench work, broken lines indicating ahoisting machine of well known construction with which the inventionadapted to be used; Fig. 2 is a side elevation of the improved dragbucket and its controlling appliances arranged as when the bucket isbeing hoistedwith its lead; Fig. 3 is a side elevation of the dragbucket and its controlling appliances arranged as when the bucket is indumping position; and, Fig. 1 is a rear elevation of the drag bucket.

Similar reference characters on the different figures of the drawingsindicate corresponding elements or features of construction hereinafterreferred to.

()n the drawings the numeral 1 indicates a section of the earth in whicha trench '2 partially niade and ahead of which a car 3 is arranged; andthe car has a boom 4 that is supported and raised or lowered by means ofa cable 5, and a winding drum (3 on the car. The car has also windingdrums 7 and S thereon and the end of the boom has a sheave 9 thereon;the foregoing being of well known or any suitable or desired con-Stl'llt'tlOH.

The dumping drag bucket comprises a body portion 10 having an upperforward portion 11 that extends past the forward end of the bucketbottom 12, the latter having digging teeth 13. The upper forward portionof the bucket body has an arch 1% provided on its top with alongitudinal centrally arranged rib 15 whereby to lift the forward endof the bucket, the rib having a plurality of apertures 16 therein. Thebucket has a back or rear end 17 and is pro vided also with a. bail orarm 18 which is pivotally connected as a link with the bucket adjacentto the bottom thereof; but to permit the bucket to freely work in atrench so that the bail or arm shall not drag against the sides ofthetrench, the bail or arm is preferably connected by means of a pivot19 to cars 20 that project rearward from the back 17. The bail isadapted to stand up against the back 17 when the bucket is at work andis swung away while the bucket is caused to tilt or turn over in dumpingoperations, the swinging end of the bail being provided with a sheave 21and also a guard 22 extending rearward of the sheave.

. cable 26 is connected with the winding drum 8 so as to be woundthereon and this extends over the sheave 9 and thence downwardly forlifting or lowering the bucket, being connected to a pivot pin 27 onwhich a pulley block 28, having a pulley or sheave 29, is hung. Asuitable cable 30 is connected to the Y 24, so as to be practicallyconnected with the cable 23, and this extends over the pulley 29 to therib 15 with which it is connected by means of one of the apertures 16. Ayoke 31 is pimtttllY. connected also to the pivot 27 and supports asheave 32. A link or yoke 33 preferably is provided also and connectedto the pivot 27 whereby a cable 3-1 which is directly connected to thelink is thereby connected with the pivot. The cable 3 1 extends downwardand under the sheave 21, thence upward and over the sheave 32 and thencedownwardto the rib 15 to which it is connected by means of one i of theapertureslG. The cable 34 can be adjusted along the rib 15 so as topractically shift the bucket body forward or rearward relatively to thesupporting sheave 32, as may be found desirable; and likewise the cable30 may be re-adjusted relatively to the rib 15.

In practical use the bucket is carried by means of the cable 26 and bycontrolling the winding drum 7 the cable 23 is controlled so as to holdup the forward port-ion of the bucket, somewhat as shown ,in Fig. 2, andas the bucket is lowered to the ground or into the trenchor ditch, thecable26 is permitted to run slack while the cable 23 is wound upon thewinding-drum 7 so as to drag the bucket forward until filled, afterwhich the bucket is hoisted by means of the cable 26 while the cable 30drawn taut by the cable 23 prevents the bucket from tilting forward, incase the load in the bucket is so distributedv as to cause tilting whilebeing hoisted, the cable 23 being permitted to run out in some caseswith the winding-drum under control. After hoisting the bucketsufficiently high it is usually swung around so as to deposit the earthalong the side of the trench or ditch, or the bucket may be permitted toswing back to dump its load into the ditch in which masonry work mayCopies of this patent may be obtained for have been completed to becovered with the earth; in order to discharge the load the cable 23 isslackened, so that the cable 30 runs over the pulley 29 and permits theforward end of the bucket to descend, in which operation the cable 34runs over the sheave 32 and around the sheave 21, the bail 18 beingdrawn away from the back of the bucket so as to cause the bucket to betilted to dump its lead, as shown in Fig. 3. The bucket may again berighted by drawing on'the cable 23 so as to pull the cable 30 over thepulley 29 and draw up the forward end of the bucket. Having thusdescribed'the invention, what is claimed as new is- 1. In an excavatingapparatus, the com bination of a drag bucket, an arm pivoted to thebucket, a bearing sheave mounted on the arm, a hoisting cable, a yokecarried by the cable, a carrying sheave carried by the yoke, and acarrying cable connected to the bucket and to the hoisting cable and eXtending over the carrying sheave and under the bearing sheave.

2. In an excavating apparatus, the combination of a carrying pivot, apulley block' and a yoke connected to the pivot to swing separatelythereon, a carrying sheave mounted in the yoke, an excavating bucket, abearing sheave mounted on the bucket, a carry ing cable havingconnection with the carrying pivot adjacent to the yoke and secured tothe bucket, the cable extending under the bearing sheave and over thecarrying sheave, and a controlling cable extending through the pulleyblock and secured to the bucket.

3. In an excavating apparatus, the combination of an excavating bucket,a bail pivoted to the bucket, a bearing sheave mounted on the bail, acarrying pivot, a pulley block and a yoke and also a link connected tothe pivot to swing separately thereon, a pulley mounted in the pulleyblock, a carrying sheave mounted in the yoke, a carrying cable securedto the link and extending under the bearingsheave and thence over thecarrying sheave and to the bucket and secured thereto, a guard on saidbail adjacent to the bearing sheave to retain the cable on the sheave,-adraft cable connected to the bucket, and a branch cable connected to thedraft cable and secured to the bucket separately from the carryingcable, the branch cable extending over said pulley.

In testimonywhereof we aifix our signatures in presence of twowitnesses.

lVitnesses E. T. SiLvrUs, C. L. CROUCH.

five cents each, by addressingthe Commissioner of Patents, Washington,D. 0.

